Patents by Inventor Eric F. Boonstra

Eric F. Boonstra has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Azeotropic compositions of perfluorohexane and hydrocarbons having 5 carbon atoms and the use thereof in the production of foams
    Patent number: 6372705
    Abstract: Azeotropic compositions made up of (a) from about 26 to about 72% by weight perfluorohexane and (b) one compound selected from (1) about 36 to about 74% by weight 2-methyl butane or (2) about 28 to about 53% by weight n-pentane in which the sum of the weight percent (a) and weight percent (b) is 100 percent may be used as blowing agents in the production of polyurethane/polyurea foams.
    Type: Grant
    Filed: March 24, 1995
    Date of Patent: April 16, 2002
    Assignee: Bayer Corporation
    Inventors: Joachim Werner, Scott A. Kane, Herman P. Doerge, Eric F. Boonstra
  • Azeotropic compositions of 1,3-dioxolane and hydrocarbons having 5 or 6 carbon atoms and the use thereof in the production of foams
    Patent number: 6358908
    Abstract: Azeotropic compositions made up of (a) from about 4 to about 50% by weight 1,3-dioxolane and (b) one compound selected from (1) about 75 to about 96% by weight cyclopentane, (2) about 60 to about 79% by weight 2-methyl pentane, (3) about 59 to about 77% by weight 3-methyl pentane, and (4) about 50 to about 69% by weight n-hexane in which the sum of the weight percent of (a) plus weight percent of (b) is approximately 100 percent are used as blowing agents in the production of polyurethane/polyurea foams.
    Type: Grant
    Filed: March 24, 1995
    Date of Patent: March 19, 2002
    Assignee: Bayer Corporation
    Inventors: Joachim Werner, Scott A. Kane, Herman P. Doerge, Eric F. Boonstra
  • Azeotrope-like compositions of 1,1,1,3,3-pentafluoropropane and tetramethylsilane
    Patent number: 5854296
    Abstract: Azeotropic compositions made up of from about 60 to about 78% by weight of 1,1,1,3,3-pentafluoropropane and from about 22 to about 40% by weight of tetramethylsilane have been found to be particularly useful as blowing agents for the production of polyurethane foams.
    Type: Grant
    Filed: September 19, 1997
    Date of Patent: December 29, 1998
    Assignee: Bayer Corporation
    Inventors: Joachim Werner, Scott A. Kane, Charles E. Mortimer, Herman P. Doerge, Eric F. Boonstra
  • Azeotrope-like compositions of dimethoxymethane, cyclopentane and 2-methyl pentane and the use thereof in the production of foams
    Patent number: 5723509
    Abstract: Azeotropic compositions made up of from about 68.1 to about 69.1% by weight of dimethoxymethane, from about 29.7 to about 30.7% by weight of cyclopentane and from about 0.7 to about 1.7% by weight in which the sum of the weight percents of the components is 100% by weight. These azeotrope-like compositions are useful as blowing agents in the production of polyurethane foams.
    Type: Grant
    Filed: September 23, 1996
    Date of Patent: March 3, 1998
    Assignee: Bayer Corporation
    Inventors: Joachim Werner, Scott A. Kane, Herman P. Doerge, Eric F. Boonstra, Charles E. Mortimer
  • Azeotrope-like compositions of 1,1,1,3,3 pentafluoropropane and tetramethylsilane
    Patent number: 5716541
    Abstract: Azeotropic compositions made up of from about 60 to about 78% by weight of 1,1,1,3,3-pentafluoropropane and from about 22 to about 40% by weight of tetramethylsilane have been found to be particularly useful as blowing agents for the production of polyurethane foams.
    Type: Grant
    Filed: September 23, 1996
    Date of Patent: February 10, 1998
    Assignee: Bayer Corporation
    Inventors: Joachim Werner, Scott A. Kane, Charles E. Mortimer, Herman P. Doerge, Eric F. Boonstra
  • Azeotropic compositions of dimethoxymethane and cyclopentane and the use thereof in the production of foams
    Patent number: 5665788
    Abstract: An azeotropic composition made up of from about 58 to about 77% by weight of dimethoxymethane and from about 23 to about 42% by weight of cyclopentane is used as a blowing agent in a process for the production of polyurethane foams.
    Type: Grant
    Filed: November 1, 1996
    Date of Patent: September 9, 1997
    Assignee: Bayer Corporation
    Inventors: Joachim Werner, Scott A. Kane, Herman P. Doerge, Eric F. Boonstra
  • Azeotropic compositions of dimethoxymethane and cyclopentane and the use thereof in the production of foams
    Patent number: 5631305
    Abstract: An azeotropic composition made up of from about 58 to about 77% by weight of dimethoxymethane and from about 23 to about 42% by weight of cyclopentane is used as a blowing agent in a process for the production of polyurethane foams.
    Type: Grant
    Filed: June 19, 1996
    Date of Patent: May 20, 1997
    Assignee: Bayer Corporation
    Inventors: Joachim Werner, Scott A. Kane, Herman P. Doerge, Eric F. Boonstra
  • Azeotropic compositions of perfluorohexane and hydrocarbons having 6 carbon atoms and the use thereof in the production of foams
    Patent number: 5614565
    Abstract: Azeotropic compositions made up of (a) from about 73 to about 88% by weight perfluorohexane and (b) one compound selected from (1) about 14 to about 27% by weight 2-methyl pentane or (2) about 13 to about 25% by weight 3-methyl pentane or (3) about 12 to about 23% by weight, provided that the sum of the weight percent (a) plus weight percent (b) is 100 percent are suitable blowing agents for the production of foams.
    Type: Grant
    Filed: March 24, 1995
    Date of Patent: March 25, 1997
    Assignee: Bayer Corporation
    Inventors: Joachim Werner, Scott A. Kane, Herman P. Doerge, Eric F. Boonstra
  • Azeotropic compositions of 1,1,1,4,4,4-hexafuorobutane and n-pentane and the use thereof in the production of foams
    Patent number: 5574072
    Abstract: An azeotropic composition made up of from about 73 to about 87% by weight of 1,1,1,4,4,4-hexafluorobutane and from about 13 to about 27% by weight of n-pentane is used as a blowing agent in a process for the production of polyurethane foams.
    Type: Grant
    Filed: September 27, 1995
    Date of Patent: November 12, 1996
    Assignee: Bayer Corporation
    Inventors: Joachim Werner, Scott A. Kane, Herman P. Doerge, Eric F. Boonstra
  • Azeotrope-like compositions of 1,1,1,3,3-pentafluoropropane and 2-methyl butane
    Patent number: 5562857
    Abstract: Azeotropic compositions made up of from about 65 to about 81% by weight of 1,1,1,3,3-pentafluoropropane and from about 19 to about 35% by weight of 2-methyl butane have been found to be particularly useful as blowing agents for the production of polyurethane foams.
    Type: Grant
    Filed: December 22, 1995
    Date of Patent: October 8, 1996
    Assignee: Bayer Corporation
    Inventors: Joachim Werner, Scott A. Kane, Charles E. Mortimer, Herman P. Doerge, Eric F. Boonstra
  • Azeotropic compositions of 1,1,1,4,4,4-hexafluorobutane and 2-methyl butane and the use thereof in the production of foams
    Patent number: 5532283
    Abstract: Azeotropic compositions made up of from about 64 to about 80% by weight of 1,1,1,4,4,4-hexafluorobutane and from about 20 to about 36% by weight of 2-methyl butane have been found to be particularly useful as blowing agents for the production of polyurethane foams.
    Type: Grant
    Filed: March 24, 1995
    Date of Patent: July 2, 1996
    Assignee: Bayer Corporation
    Inventors: Joachim Werner, Scott A. Kane, Eric F. Boonstra, Herman P. Doerge
  • Azeotropic compositions of 1,1,1,4,4,4-hexafluorobutane and N-pentane and the use thereof in the production of foams
    Patent number: 5488073
    Abstract: An azeotropic composition made up of from about 73 to about 87% by weight of 1,1,1,4,4,4-hexafluorobutane and from about 13 to about 27% by weight of n-pentane is used as a blowing agent in a process for the production of polyurethane foams.
    Type: Grant
    Filed: June 1, 1995
    Date of Patent: January 30, 1996
    Assignee: Bayer Corporation
    Inventors: Joachim Werner, Scott A. Kane, Herman P. Doerge, Eric F. Boonstra
  • Aezotropic compositions of 1,1,1,4,4,4-hexafluorobutane and n-pentane and the use thereof in the production of foams
    Patent number: 5472989
    Abstract: An azeotropic composition made up of from about 73 to about 87% by weight of 1,1,1,4,4,4-hexafluorobutane and from about 13 to about 27% by weight of n-pentane is used as a blowing agent in a process for the production of polyurethane foams.
    Type: Grant
    Filed: March 24, 1995
    Date of Patent: December 5, 1995
    Assignee: Bayer Corporation
    Inventors: Joachim Werner, Scott A. Kane, Herman P. Doerge, Eric F. Boonstra